Takagi and Miyamoto poses as a bride and groom in order to catch a serial killer/burglar who had threatened to kill the real bride and groom. When Chiba reports that the burned corpse of one of the weddings guests is found near the river, Megure deduces that the victim was killed by the serial killer in order to obtain the wedding invitation. A mysterious video arrives at the wedding party from a friend of the groom. After watching the video, Megure suspects that the killer is already in the chapel and Conan suggests that the bride meet with the guests in order to find the burglar who broke into her house. The bride reports that there are three suspicious guests: a photographer named Rinzo Gunji, a snowboarding instructor named Teigo Shimabukuro, and an internet administrator named Fukuharu Karube. The groom insists that the wedding to proceed, despites Megure's protests.
Murder
Location:Near the Teimuzu river
Victim:Unknown
Cause of death:Slit wound on the throat
Suspects:Rinzo Gunji, Teigo Shimabukuro, and Fukuharu Karube
As the bride walks down the aisle, the burglar suddenly appears. However, the groom announces that the burglar was actually a police officer, Chiba, posing as the burglar. Megure points out that Chiba has been by the river and the groom could not have figured out the burglar's true identity. Megure also reveals that the groom (Masateru Taira) was the burglar's accomplice and in the end killed the burglar so he could marry the bride for money. When the groom attempts to escape, he grabbed the knife from Chiba and then Sato stops him. As Takagi hears what's happening to Sato from the phone he rushes to the front of the church but the groom was already stopped by Ran and Conan. In the end there was a billboard with Sato and Takagi's photo that makes Shiratori kind of jealous.